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Mineral Specimens with Quartz
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This is a nifty Indian combo specimen. On a matrix of basalt, drusy, white, quartz formed first followed by gray spheres of calcite, to 1.75 cm across, then glassy, colorless, quartz, to 2.5 cm in length, and lastly, balls of white gyrolite, to 3.25 cm across. The gyrolite has a matte luster with superb translucence. Rarely do you see such large aggregates of this species, and so it is significant as well as nice for the display qualities.
Nestled in a basaltic vug is a sparkly crystal druse of colorless quartz ,upon which was deposited some incredibly bright and sparkly crystal clusters of the rare species Goosecreekite . Atop the Goosecreekite sits two pearlescent, translucent crystals of heulandite, the largest of which measures 4 cm across and is also doubly terminated.
Looking very much like a freeform sculpture, this specimen features several crystals of pearlescent to light salmon color, translucent, stilbite, to 4.0 cm in length, on gray chalcedony and basalt. At the top of the specimen is a saddle shaped, lustrous, transparent, doubly terminated, crystal of heulandite, measuring 3.25 cm across. Super combo!
A stalk of gray chalcedony acts as the matrix for this aesthetic specimen. Jauntily perched on the chalcedony are lustrous, translucent, doubly terminated, pearlescent crystals of stilbite, to 4.0 cm across, as well as saddle shaped , lustrous and translucent crystals of heulandite, to 3.0 cm across.
Sharp crystals with the utterly brilliant lustre and internal sparkle that seem to characterise this find. The largest crystal is 1.7 cm. One doubly-terminated crystal is just over 1 cm. Beautiful amethyst from an unusual locality, found May 2008. They are all from what the collectors (Luca and Fabrizio Ferrero) called "the labour day pocket".
Particularly intense purple crystals with the utterly brilliant lustre and internal sparkle that seem to characterise this find. The largest crystal is 1.2 cm but teh intense color set against the sparkling greenish (prehnite?) vug behind the gate of the crystals, makes it a special piece. Beautiful amethyst from an unusual locality, found May 2008. They are all from what the collectors (Luca and Fabrizio Ferrero) called "the labour day pocket".
Sharp crystals with the utterly brilliant lustre and internal sparkle that seem to characterise this find. The largest crystal is 2.2 cm. This is among the larger of the find! Beautiful amethyst from an unusual locality, found May 2008. They are all from what the collectors (Luca and Fabrizio Ferrero) called "the labour day pocket".
Sharp crystals with the utterly brilliant lustre and internal sparkle that seem to characterise this find. The largest crystal is 1.25 cm. Beautiful amethyst from an unusual locality, found May 2008. They are all from what the collectors (Luca and Fabrizio Ferrero) called "the labour day pocket".
Sharp crystals with the utterly brilliant lustre and internal sparkle that seem to characterise this find. The largest crystal is 1 cm but there are many, protectively arranged at the entrance to this pocket. Beautiful amethyst from an unusual locality, found May 2008. They are all from what the collectors (Luca and Fabrizio Ferrero) called "the labour day pocket".
Sharp crystals with the utterly brilliant lustre and internal sparkle that seem to characterise this find. The largest crystal is 1.7 cm and doubly-terminated. This is among the larger of the find, and there is much color on this small matrix specimen...the crystals are the deeper hue to come from the find, it seems. Beautiful amethyst from an unusual locality, found May 2008. They are all from what the collectors (Luca and Fabrizio Ferrero) called "the labour day pocket".
A dramatic, complete all-around, tower of crenellated smoky quartz perched centrally on and impaling a matrix of albite and smaller quartz! The quartz is actually doubly-terminated, though you'd want to stand it on the bottom termination in a base (provided inclusive). The brilliance and lustre of the specimen are superb, and top quality. It is complete all around and, if you have a showcase deep enough, makes a very visual impact between teh combintaion of gemminess and form.
Rose quartz is the rarest and most prized quartz varietal, and good specimens are always sought-after by collectors – particularly when they show a unique aesthetic quality as this one does. This is an exquisite "fan" of translucent, tightly-intergrown crystals that has grown on a crystal of colorless quartz. The rose quartz rises about 3 cm to its ridge of terminations. The crystals have a wonderful sparkly luster, better in person. Old specimen from the famous 1960s finds at this island in the middle of a river, noticeably classic for the find due to the matrix arrangement and overall "look". Ex. Kirby Siber collection (Switzerland)
A MAJOR ferberite for this important locale....and, No, this is NOT a super ferberite specimen from the plentiful finds in China, but a much more uncommon KOREAN specimen that came out of the Rolf Wein Collection in Germany, which was dispersed around 2004-2005. What makes it extraordinary is not just its excellence for this locality, and in fact its overall quality by any standard, but also its amazing aesthetics: the large, 7.5-cm ferberite crystal is locked inside gemmy, translucent quartz crystals! Its termination, in fact, extends right up into the crystal on the left side. Ferberite is not typically a remarkably pretty mineral, so the fact that this specimen is so attractive and dramatic overall adds a lot to its existing desirability as a fine locality specimen from one of the most classic localities for tungsten minerals. Ferberite also , I can say, does not seem to occur often as inclusions. I cannot think of another piece I know with similar aeshtetics.
Botryoidal fluorites are rare. They are best known from this Indian locality, and from a recent find in China (purple ones). These Nasik ones have always been popular, not only due to their relative uncommoness, but also the fact that they are just plain "cool." This one, however, stands above many of the rest, in my opinion. First, it is UNUSUALLY translucent for one of these – in fact, you can faintly see all the way through it! Second, it is complete all around, with no contacts, and perfectly round. And finally, it is nestled in a perfect "nest" of light purple amethyst crystals as opposed to the normal white quartz. What in incredibly eye-catching and unusual mineral specimen, in every respect!
The vast majority of Brandberg quartz specimens are single crystals. Of those that are matrix specimens, a very small number are associated with prehnite, as this one is – and it adds so much to the beauty of this specimen. I also like the attractive isolation of the lone, gemmy quartz crystal with its elegant blush of smoky color at the termination. Note the small bloom of some kind of pseudomorph (we think) crystals on the side of the quartz crystal.
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Rob Lavinsky, rob@irocks.com
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